Dominique Frazier, 18, of Washington, was stabbed at about 8 p.m. in her second-floor suite in the Christa McAuliffe Residential Community building in the 14000 block of Jericho Park Road on the university's campus, police said.

Officers found Frazier in the hallway, bleeding from the upper torso and unconscious. Frazier was taken to Prince George's Hospital Center, where she was pronounced dead about 40 minutes later.

Known on YouTube and Twitter as Ms. Bonnie Black, Frazier enjoyed sharing her poetry with the world, friends said.

"She was really outgoing and fun and just really great to be around," said Jami Snowden, a friend of Frazier.

But witnesses told police Frazier and her roommate, Alexis Simpson, had been fighting for the past week. University officials could not confirm an ongoing dispute between the two, but they did say one of the women had made a request to get another roommate.

Simpson, 19, of District Heights, turned herself in at midnight to face two counts of murder and assault charges, police said.

According to charging documents, Frazier and Simpson got into an argument in their suite Thursday over music in a shared bathroom. A scuffle ensued, in which a witness was injured and the stabbing resulted, the charging document states.

"The witness observed the suspect's arm swinging toward the victim as if she was punching her. The victim immediately grabbed her throat, at which time, the witness observed blood coming from the victim's neck," the charging document reads.

"Investigators don't know a clear motive at this point as to what started this last night but they know that there was some type of disagreement between the two roommates that led to a physical altercation that culminated in the suspect stabbing the victim with an unknown object," Maryland State Police spokesman Greg Shipley said.

In the charging documents, witnesses told investigators that Simpson said, "I didn't mean to do it. You all don't know what I've been through. You all jumped me."

Police said they believe Simpson left the campus after the assault. Police said Simpson ultimately turned herself in at about midnight. She remained held Friday at the Prince George?s County Detention Center without bond as detectives continued to interview witnesses. State police said they aren't exactly sure why the fight escalated.

Police confirmed the incident was isolated.

The university canceled classes and a homecoming pep rally Friday.

"Emotions can build up in such a violent way. It's just really troubling, and I think that's part of what's weighing heavily on the community," Bowie State University spokeswoman Cassandra Robinson said.

"I find it really sad. From what I heard, it was over an iPod. I find it really sad that this has all happened and everything, and I really pray for her family," said Mia Stevenson, a student.

"I did not expect anything like this to happen here," said Lance Fitzpatrick, a student. "Everybody seems to get along with each other. This is definitely a big shock, big shock to all of us."

Students and faculty gathered Friday to reflect and offer condolences.